I am a heavy user of LyX 2.0 and I want to to add useful shortcuts to help me in my work. I tend to copy and paste a lot of text from PDFs or the web or even some old work written in MS Word. A shortcut for pasting unformatted text would be useful in this case. I tried to create a toolbar icon in a similar way to the example below in my custom toolbar.inc.

Item "Bold" "font-bold"

I wonder if there is something similar to the above command to that of the unformatted text.